Small intestine

Its lining releases secretin and cholecystokinin, signals involved in coordinating digestion.

Receptor location — biological context

A receptor in an organ does not prove that this compound reaches or affects that organ.

GLP1R
Homo sapiens · non-human primates
Within the gastrointestinal tissues studied, GLP1R expression was highest in Brunner’s glands of the duodenum. The study also found it in myenteric neurons throughout the gut.
Source: Pyke et al., 2014

The atlas is being expanded. Missing links indicate gaps in this map, not absence of biology.